Which of the following is NOT an example of a physical change?
Answer:
Solution : Combustion of Liquefied Petroleum Gas (LPG) is a chemical change. Because it is an irreversible reaction and new products, carbon dioxide and water vapour are formed and lot of heat is also produced during the reaction.
Which term best describes two predators living in the same habitat who feed on the same prey?
A.coexistence
B.mutualism
C.competition
Answer:
The answer is C, competition
Competition refers to the interaction between the organisms to seek or feed on the same resource.
The term that best describes the two predators living in the same habitat feeding on the same prey is competition.
Competition can be defined as:
Competition in an ecosystem or habitat will take place when the ecological niche of organisms overlaps as both organisms try to use the same resource. In habitat, the predators feeding on the same prey will have competition, as the predators will fight for food, nutrients, and a source of energy to survive. Competition can be caused among animals due to food, space, and shelter.
Thus, the correct answer is Option C.
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6) What new thing have you been doing to stay stress-free and positive during the pandemic
Fertilization occurs when:
the male gamete fertilizes the female gamete
the female gamete fertilizes the male gamete
Answer:
The first one
Explanation:
Hope this helps!
Answer:
first one :D
Explanation:
halimiocistus plant reproduce sexually or asexually? Is their organism identical or similar?
Answer:
They produce both sexually and asexually. Also the organism is similar
Explanation:
I learned this last year
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Which of the following is not one of the steps through which scientists hypothesize simple cells were produced? (3 points)
The biotic synthesis of small inorganic molecules
The joining of small molecules to form macromolecules
The origin of self-replicating molecules
The packaging of macromolecules into protocells
Answer:
The biotic synthesis of small inorganic molecules
Explanation:
The biotic synthesis of small inorganic molecules is not one of the steps through which scientists hypothesize simple cells were produced.
What do you mean by a Cell?A cell may be defined as the smallest structural and functional unit of life in the living entities.
Biotic synthesis of small inorganic molecules lacks the presence of essential elements like hydrogen and carbon. In the absence of such important biomolecules, simple living cells are impossible to synthesized.
Therefore, the correct option for this question is A.
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The fossil record shows that the types of living things on Earth changed over time. Which fossil would most likely be found in the oldest rock layer?
Answer:
Trilobite
Explanation:
I got it right on my test:)
Answer:
The answer is Trilobite. Here is proof. Plz mark brainliest
Explanation:
Write the lyrics of O Ramji bada dukh dina
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
Which of the following is NOT a consequence of a stressed ecosystem?
A. Famine
B. Drought
C. War
D, Increased Population
Answer:
C
Explanation:
due to all the other questions come naturally that stresses the ecosytem
Help please need help this is due soon
Answer:
2)parastice
4)predation
hope this helps and this is the far I can get
A student is asked to create models of both prokaryotic and eukaryotic cells. They will use materials to represent the cell membrane,
cytoplasm, DNA, and other internal cell structures. Which structures will be modeled in BOTH cell types? Select ALL that apply )
A) DNA
B) nucleus
C) ribosome
D) mitochondria
E) Golgi apparatus
A) and C)
Trust me :)
How could students find out whether a short ramp or a long ramp would require less force to use? Measure the amount of force it takes to move ----
Answer:
Explanation:
By using an object up two ramps. The objects best have the same height, yet they must have different lengths.
PLEASE WRITE IN OWN WORDS, HELP!
Answer:
Evolution means change in the physical features of an organism.
Explanation:
Evolution means change in the physical features of an organism. Evolution occurs in the population of an organisms due to various factors such as mutation, non-random mating and natural selection. Nonrandom mating occurs when an organism prefer mating with particular superior organisms or with the similar organism. Mutation in the genetic makeup of an organism is also responsible evolution. this mutation occurs when an organism experience ultraviolet radiation from the sun, or also occur if an error in DNA during cell division. Gene flow is also known as gene migration is the transfer of genetic material or traits from one population to another when the organism is migrated to another environment. Some organisms are selected naturally because they have the potential to survive in that environment so they survive and that doesn't adopt itself to the environment, it will extinct from the environment.
What happens to water (H2O) and carbon dioxide (CO2) during photosynthesis?
Answer:
Carbon dioxide turns into glucose and water turns into oxygen
Explanation:
carbon dioxide is combined wih hydrogen atoms in the presence of ATP molecules to form glucose
water molecules split by sunlight energy to form oxygen gas and hydrogen atoms . the oxygen obtained from water is released by the leaf as a by- product
How does the crossing-over of chromosomes that occurs during recombination result in increased genetic variability in population?
THIS IS A TEST ANSWER
Answer:
they swap alleles
Explanation:
when homologous chromosomes cross over during meiosis, they exchange segments of DNA/swap alleles. this means that the chromosomes now have a completely unique combination of alleles, which causes variation. It is also random which of these unique chromosomes end up in which daughter cell (the gametes) and since fertilisation is a random and independent event, which unique male gamete that fertilises which unique female gamete is also random. This means the resultant zygote has a unique combination of alleles that is unlike either of their parents.
Consider the following scenario: A drought hits the habitat of a semi-aquatic bird population. All ponds dry up, and fish populations decline. There are two groups of birds in the population that differ in leg length and diet. Long-legged birds eat fish, while short-legged birds eat insects. The drought has little effect on insect populations. What is the main selective pressure in this scenario?
leg length
insect population
drought
fish population
fish population
cuz i know :0
The main selective pressure in the given scenario will be on the fish population. Thus, the correct option will be D.
What is Selective pressure?The selective pressure can be defined as an evolutionary force that causes a particular phenotype to be more favorable in certain environmental conditions than other phenotypes. Selective pressures are the considered forces which can drive the evolution through the process of natural selection. Some phenotypes are more favorable than other phenotypes, depending on the external conditions.
Selective pressures can be detrimental or beneficial to certain phenotypes present within a population. The four main types of selection pressures are the biological factors, such as the predation and disease, the availability of resources, the climatic conditions, and the competition between different species.
Therefore, the correct option will be D.
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Jennifer observes a weather map showing tomorrow's weather. She predicts that air will travel from the low pressure system to the high pressure system, causing wind. The wind will carry moisture since it is coming from the ocean. Choose the statement which corrects the error(s) in Jennifer's prediction. (2 points)The wind from the ocean will not carry moisture.
The wind will travel from the high pressure system to the low pressure system.
Since the low pressure system is not over land, wind will not be created.
Wind is only created when two high pressure systems meet.
Answer:
Jennifer observes a weather map showing tomorrow's weather. She predicts that air will travel from the high pressure system to the low pressure system, causing wind. The wind will carry moisture since it is coming from the ocean.
Explanation:
Winds refers to the movement of air which are produced due to differences in air pressure.
These pressure differences are to uneven heating of the earth by the sun. Due to the uneven shape of the earth, regions around the equator receive a fairly consistent heating from the Sun. However, with increase in latitude north and south, there is more uneven heating of the earth's surface by the Sun. When air is heated, warm air rises up to the atmosphere. This produces a pressure difference and subsequently cold air sinks downward to replace it. This constant air movement results in winds. The winds generated moves from a high pressure system to a low pressure system. The greater the pressure difference, the greater the wind force.
When warm air from land rises, air from the ocean in to replace it. The wind coming from the ocean is moisture-laden, and results in precipation on land.
Answer:a
Explanation:
How does this behavior affect the survival of the eagle population?
Someone please help:)
Answer:
A. Provides a safe place for offspring to grow
Explanation:
Answer:
A
Explanation:
I took the test recently
how are karyotypes made?
Answer: A karyotype is simply a picture of a person's chromosomes. In order to get this picture, the chromosomes are isolated, stained, and examined under the microscope. Most often, this is done using the chromosomes in the white blood cells. A picture of the chromosomes is taken through the microscope.
Explanation:
Karyotypes are prepared from mitotic cells that have been arrested in the metaphase or prometaphase portion of the cell cycle when chromosomes assume their most condensed conformations. A variety of tissue types can be used as a source of these cells.
Explanation:Hope this was helpful and have a great one!
≧◠ᴥ◠≦✊. Some people taste the chemical phenylthiocarbamide (PTC) as intensely bitter, while others cannot taste it at all. PTC is similar to chemicals in broccoli, Brussels sprouts, and cabbage, among other plants. Tasting PTC is a dominant trait; non-tasting is recessive. About 51% of people of European descent are tasters. If all of the assumptions of Hardy-Weinberg equilibrium are met, then among people of European descent... a) What is the frequency of the non-taster phenotype
Answer:
The frequency of the non-taster phenotype among people of European descent is 49% or 0.49
Explanation:
Let us assume that the allele for tasting PTC is T, while that for not tasting PTC is t.
According to the Hardy-Weinberg equation : p² + 2pq + q² = 1
Also p + q = 1
Where p² is the frequency of individuals with the TT genotype for tasting PTC,; wow is the frequency of individuals with the heterozygous allele for tasting PTC, while q² is the frequency of the individuals with tt genotype expressed as the non-taster phenotype since the allele for tasting is dominant over that of the non-taster.
From the information provided 51% of people of European descent are tasters. Also, tasting PTC is dominant over non-tasting. This implies that individuals with TT genotype and Tt genotype will be phenotypically expressed as tasters.
Therefore p² + 2pq = 51% or 0.51
q² = 1 - p² + 2pq
q² = 1 - 0.51
q² = 0.49 or 49%
The frequency of the non-taster phenotype among people of European descent is 49% or 0.49
how does photosynthesis keep humans alive?
Answer:
Because photosynthesis is important to living organisms because it is the number one source of oxygen in the atmosphere.
Explanation:
So we need it to breath basically.
The further you move away from the equator, the ________________________________ the climate is.
A. hotter
B. colder
C. same
answer:
b.colder
explanation:
this is because the sun's rays are dispersed over a larger area of land as you move away from the equator. this is due to the curved surface of the earth.
good luck :)
hopefully, this helps
have a great day !!
PLEASE HELP ME D:
Sophie visited Carlsbad Caverns with her family during her summer vacation, and she was amazed at the cave’s formations. She learned that the cave was formed from minerals.
In what ways can minerals form? Choose the three that apply.
A. from gases that condense into solids
B. from dripping water
C. from cooled magma
D. from elements in solutions that crystallize
E. from organic materials
Answer:
c. from cooled magma
d. from elements in solutions that crystallize
e. from organic materials
i hope this helps! do comment to clarify anything if you need to :D
What can we learn about the organisms on this chart? *
A. Some of the animals are monkeys
B. They are each Classified under a different Kingdom
C. They have the same scientific name
D. They are closely related
Which of the following gives you information about a population’s age structure?
Group of answer choices
All individuals are found at least 10 meters away from others.
There are 25 individuals with a square kilometer.
Individuals live in rain forests in tropical South America.
There are 10 males and 15 females under the age of two.
Answer:
There are 10 males and 15 males under the age if two.
What is electricity?
A
the energy produced when an object vibrates
B
the energy stored in the bonds of chanical compounds
с
the energy produced by electrons
the energy of motion
HELP
HELP
HELP
I
NEED
THIS
HURRY
Answer:
oxygen in and carbon dioxide out
Answer:
I think that the answer might be B
Given that s ⊥ t and r ⊥ t, what conclusion can be made?
s ∥ r
s ∥ t
t ∥ r
r ⊥ s
Answer:
s ∥ r
Explanation:
5. True or False: The exact history and origins of yoga is uncertain, however, it is believed to have
originated in India. *
(1 Point)
O True
False
Answer:true
Explanation:
Yoga's origins can be traced to northern India over 5,000 years ago. The word yoga was first mentioned in ancient sacred texts called the Rig Veda. ... Yoga was refined and developed by Rishis (sages) who documented their practices and beliefs in the Upanishads, a huge work containing over 200 scriptures.
Answer:
true
Explanation:
it was in india 5000 years ago and they talked about it in a language called Rig Veda and which is also written in four sets in another language called sanskrit, was this any helpful?
1. A student is completing a Punnett square for a trait (X/x) that is autosomal and inherited by the dominant allele. The father does not have it (xx), but the mother does (Xx). If they had two children, a son and a daughter, what would the completed Punnett square look like (i.e., would the son have the trait, would the daughter have the trait)?
A. Both children would not inherit the trait.
B.Both children would inherit the trait.
C. Each child has a 50% chance of inheriting the trait.
D. One child would inherit the trait and one child would not.
Answer:
C
Explanation:
autsomsal means that it is not x-linked/ realted to gametes. Dominate means that it needs only one X to get the trait
Using the punnet square
X x
x Xx xx
x Xx xx
there is 2 X which means there is a 50% change that their child will get the trait
In the punnett square analysis, each child has a 50% chance of inheriting the trait.
The mother Xx has the trait and the father xx doesn't.
Using the punnet square
Xx xx
Xx Xx xx xx
There are just two traits which are Xx and xx which are in equal frequency
and proportion.
This therefore means that the children have a 50% chance of getting the trait.
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